Abstract：
A solid-state electrochemiluminescence (ECL) sensor was fabricated by immobilizing luminol, a classical luminescent reagent, on a Zn-Co-ZIF carbon fiber-modified electrode for the rapid and sensitive detection of procymidone (PCM) in vegetable samples. The sensor was created by sequentially modifying the glassy carbon electrode with Zn-Co-ZIF carbon fiber (Zn-Co-ZIF CNFs), Pt@Au NPs, and luminol. Zn-Co-ZIF CNFs, prepared through electrospinning and high-temperature pyrolysis, possessed a large specific surface area and porosity, making it suitable as carrier and electron transfer accelerator in the system. Pt@Au NPs demonstrated excellent catalytic activity, effectively enhancing the generation of active substances. The ECL signal was significantly amplified by the combination of Zn-Co-ZIF CNFs and Pt@Au NPs, which can subsequently be diminished by procymidone. The ECL intensity decreased proportionally with the addition of procymidone, displaying a linear relationship within the concentration range 1.0 × 10-13 to 1.0 × 10-6 mol L-1 (R2 = 0.993). The sensor exhibited a detection limit of 3.3 × 10-14 mol L-1 (S/N = 3) and demonstrated outstanding reproducibility and stability, making it well-suited for the detection of procymidone in vegetable samples.
摘要：
通过固定鲁米诺制备了固态电化学发光（ECL）传感器，一种经典的发光试剂，在Zn-Co-ZIF碳纤维修饰电极上快速，灵敏地检测蔬菜样品中的原吡啶酮（PCM）。通过用Zn-Co-ZIF碳纤维（Zn-Co-ZIFCNFs）依次修饰玻璃碳电极来创建传感器，Pt@AuNPs，和鲁米诺。Zn-Co-ZIFCNFs,通过静电纺丝和高温热解制备，具有较大的比表面积和孔隙率,使其适合作为系统中的载体和电子转移加速器。Pt@AuNPs表现出优异的催化活性，有效增强活性物质的生成。通过Zn-Co-ZIFCNFs和Pt@AuNPs的组合显着放大了ECL信号，随后可以通过丙咪啶酮减少。ECL强度随着原米拉酮的加入成比例地降低，在1.0×10-13至1.0×10-6molL-1的浓度范围内呈线性关系（R2=0.993）。该传感器的检出限为3.3×10-14molL-1（S/N=3），并具有出色的重现性和稳定性，使其非常适合于检测蔬菜样品中的原吡啶酮。
